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radiology
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X-ray machine

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Key People:
Ernest Amory Codman
Elias Zerhouni

radiology, branch of medicine using radiation for the diagnosis and treatment of disease. Radiology originally involved the use of X-rays in the diagnosis of disease and the use of X-rays, gamma rays, and other forms of ionizing radiation in the treatment of disease. In more recent years radiology has come also to embrace diagnosis by a method of organ scanning with the use of radioactive isotopes and also with nonionizing radiation, such as ultrasound waves and nuclear magnetic resonance. Similarly, the scope of radiotherapy has extended to include, in the treatment of cancer, such agents as hormones and chemotherapeutic drugs. ...(100 of 1194 words)

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